the leadership of Luis Ranque Franque. Resulting from the merger of various émigré associations in Brazzaville, the MLEC rapidly became the most prominent of the separatist movements. A further group was the Alliama (Mayombe National Alliance), representing the Mayombe, a small minority of the population. These movements united in August 1963 to form a common, united front called the Front for the Liberation of the State of Cabinda (FLEC). The leadership role was taken by the MLEC's Ranque Franque. FLEC established a Cabindan government in exile in Kinshasa. In marked contrast with the FNLA, the FLEC's efforts to mobilize international support for its government in exile met with little success. In fact, the majority of OAU members, concerned that this could encourage separatism elsewhere on the continent and duly committed to the sanctity of African state borders, firmly rejected recognition of the FLEC's government in exile. Later, in the course of Angola's turbulent decolonisation process, Ranque Franque proclaimed the independence of the Republic of Cabinda in Kampala on 1 August 1975 at an OAU summit which was discussing Angola at that precise moment. Zairian President Mobutu Sese Seko called for a referendum on the future of the Cabinda. Congolese Prime Minister Henri Lopes is reported to have said at the time that "Cabinda exists as a reality and is historically and geographically different from Angola." The Alvor Agreement, signed on January 15, 1975, granted Angola independence from Portugal on November 11. The agreement, signed by the MPLA, FNLA, UNITA, and the Portuguese government, was never signed by the FLEC or any representatives of Cabinda. MPLA (mainly Cuban) troops entered Cabinda via Pointe Noire on November 11, 1975 and incorporated Cabinda into Angola proper as "Cabinda Province". The Alvor Agreement states that "Angola constitutes one indivisible unity. In this context, Cabinda is an integral and inalienable part of Angola." At the time, Cabinda was producing nearly all of Angola's oil, which accounted for close to half of the nation's gross national product. During much of the 1970s and 1980s, FLEC operated a low intensity, guerrilla war, attacking Angolan government troops and economic targets or creating havoc by kidnapping foreign employees working in the province's oil and construction businesses. In July 2006 after ceasefire negotiations in Brazzaville, António Bento Bembe – as a president of Cabindan Forum for Dialogue and Peace, vice-president and executive secretary of FLEC – announced that the Cabindan